Stocko — Searchable index of illustrations, with online purchase available.

Laertis Art Studios — Conceptual illustrations and stock work, in natural media. The resource is organized into field of use.

Carter, Stephanie — Traditional realism and computer generated images. Stock illustrations available.

Jason Schneider — Contemporary illustrations in a variety of categories, including business, entertainment, finance, issues and travel.

Steven Salerno — Whimsically stylized and colorful stock illustrations in digital media, searchable with keywords and themed categories.

IllustrationOnLine — Stock illustrations supplied by numerous artists. Many different media and stylizes are represented, and are searchable by subject matter.

stockart.com — Monochrome and color stock art searchable by keyword, category or illustrator's name.

The Spirit Source — Specializes in stock illustration mainly in religious, spiritual, and inspirational motifs.

Mahnart Studio — This resource is sorted by category, and includes mainly line-defined, coloured and black white, digital illustrations.

Lotenero Stock — Keyword based search of library including; stylized and conceptual vector illustrations.

ImageZoo Media — Rights-protected and royalty free stock illustration source, searchable with keywords. Also includes royalty free collections for order.

Oliver Weiss Stock Archive — Illustrations in various styles, including line art, black and white, as well as color. Sorted by category uses, and searchable with keywords.

Christie's Images — Classical and contemporary Fine and Decorative art images, and illustrations, available for licensing from one of the world's leading auction houses.

Ecliptic — Specialized in IT business and computing themes. The royalty-free stock illustrations are grouped by style, such as: painting, collage, vector and 3D renderings.

Ross, Scott — Portfolio of illustration and design services.